package com.song.server.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.*;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spi.service.contexts.SecurityContext;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.ArrayList;
import java.util.List;

@EnableSwagger2
@Configuration
public class Swagger2Config {

    // 规定Swagger2扫描哪些包
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.song.server.controller"))
                .paths(PathSelectors.any())
                .build()
                .securitySchemes(apiKeys())
                .securityContexts(securityContexts());
    }

    // Swagger2文档配置
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("云E办接口文档")
                .description("云E办接口文档")
                .contact(new Contact("inkolopolookni", "http://localhost:8081/doc.html", "xxx@qq.com"))
                .version("1.0")
                .build();
    }

    // 配置请求头信息（ApiKey实现了SecuritySchemes抽象类）
    private List<ApiKey> apiKeys() {
        List<ApiKey> result = new ArrayList<>();
        ApiKey apiKey = new ApiKey("Authorization", "Authorization", "Header");
        result.add(apiKey);
        return result;
    }

    // 配置需要认证的路径
    private List<SecurityContext> securityContexts() {
        List<SecurityContext> result = new ArrayList<>();
        result.add(getContextByPath("/hello/.*"));
        return result;
    }

    // 通过请求路径获取context
    private SecurityContext getContextByPath(String pathRegex) {
        return SecurityContext.builder().securityReferences(defaultPath()).forPaths(PathSelectors.regex(pathRegex)).build();
    }

    private List<SecurityReference> defaultPath() {
        List<SecurityReference> result = new ArrayList<>();
        AuthorizationScope authorizationScope = new AuthorizationScope("global", "accessEverything");
        AuthorizationScope[] authorizationScopes = new AuthorizationScope[1];
        authorizationScopes[0] = authorizationScope;
        result.add(new SecurityReference("Authorization", authorizationScopes));
        return result;
    }


}
